Lisbon climate
Lisbon heat and sudden weather reshape a day on the hills.
A warm Lisbon day is felt in the climb through stone streets. During July and August, the warmest months, a retiree may shorten time on the hills, use public transit for part of the journey, or place outdoor time in the Monsanto Green Corridor earlier.
Lisbon also faces days shaped by heat waves, cold weather, intense precipitation, and floods. Heavy rainfall, strong winds, and extreme temperatures can interrupt ordinary city functioning, turning a planned trip across the capital into time closer to home.
Living through the seasons
At Lisbon Geofisico, the normal annual mean from 1991 through 2020 is 17.6 C. July and August are the warmest months, and the record includes days above 25 C and 30 C.
- Overall Comfort
- Excellent
4.7 / 5
- Average Summer High
- 72°F
- Days Above 90°F
- 0 days/year
- Summer Feel
- Excellent
Mild · 72°F
Excellent
4.8 / 5
- Average Winter Low
- 53°F / 12°C
- Days Below Freezing
- 0 days/year
- Winter Feel
- Excellent
Excellent
Excellent
4.7 / 5
The warmer day starts in Monsanto
A retired couple chooses the Monsanto Green Corridor before the day's warmth becomes more demanding. Public transit carries part of the return, leaving them with less climbing on stone streets during the warmer hours.
The shape of the year
Lisbon prepares for more than summer warmth. The city addresses heat waves, cold weather, intense precipitation, and floods as conditions that can enter daily life at different times.
- Humidity
- 81%
- Comfortable Months
- 11 months
- Solar Exposure
- 1757 peak sun hrs/yr
Poor
Excellent
Fair
Lisbon asks the household to keep more than one kind of day
A retiree may arrange life differently during a heat wave, a period of cold weather, or intense precipitation. A flexible plan can keep an expected activity possible in another form without pretending that the weather has no consequence.
Air, allergies, and weather
Municipal risk information describes frequent adverse weather that includes heavy rainfall, strong winds, and extreme temperatures. These conditions can disrupt public transit, uphill errands, and plans for time outdoors.
Air and allergies
- Air Quality
- Very Good
- Allergy Levels
- Poor
4.1 / 5
Current AQI
Checking…
Current PM2.5
Checking…
Timing and weather
- Long Term Fine Particle Pollution
- 10.7 µg/m³ 2021-2025 modeled average
- Best Months
- Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
- Toughest Months
- Jan
- Heat Risk
- Low
- Drought Risk
- Medium (0.4-0.6)
- Weather Volatility
- Strong
Moderate · 10.7 µg/m³ 2021-2025 modeled average
Very Good
4 / 5
Strong wind changes the trip
A couple preparing to cross Lisbon by public transit meets heavy rainfall and strong winds and postpones the outing. The decision keeps them from adding a steep walk to a day when ordinary city functioning may already be disrupted.
Lisbon in everyday life
Could Lisbon work for you?
What may work well
- Public transit can reduce uphill walking during warmer conditions, while the Monsanto Green Corridor gives outdoor time a distinctly Lisbon setting.
- Lisbon municipal planning addresses heat waves, cold weather, intense precipitation, and floods.
What to think about
- July and August are the warmest months, with days above 25 C and 30 C that can make the city's hills more demanding.
- Heavy rainfall, strong winds, extreme temperatures, and floods can disrupt ordinary city functioning and change planned journeys.
Questions retirees ask
What is Lisbon's normal annual mean temperature?
The Lisbon Geofisico normal annual mean from 1991 through 2020 is 17.6 C.
Which months are warmest in Lisbon?
July and August are the warmest months. The Lisbon Geofisico record also includes days above 25 C and 30 C.
Which weather concerns does Lisbon address?
The city addresses heat waves, cold weather, intense precipitation, and floods. Municipal risk information also identifies heavy rainfall, strong winds, and extreme temperatures as frequent adverse conditions.
How can weather affect a day in hilly Lisbon?
Extreme temperatures can make climbing more demanding, while heavy rainfall and strong winds can interrupt public transit and other city activity. A retiree may need to shorten, move, or postpone a planned outing.
Lisbon may appeal to a retiree who enjoys a hilly city and is comfortable letting weather change the timing or shape of a day. The personal choice is whether warm summer conditions, occasional cold, heavy rain, strong winds, and possible disruption can coexist with the home and mobility they want.
Sources
Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.
Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.
- NASA POWER
Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk, Weather Volatility
- Open-Meteo / Copernicus CAMS
Used for Air Quality, Long-Term Fine-Particle Pollution
Checked 2026-05-18
- World Resources Institute (WRI)
Used for Drought Risk
Checked 2026-07-13
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